The quantitation of how much time constitutes short and recent varies by disease and by context, but the core denotation of acute is always qualitatively in contrast with chronic, which denotes long-lasting disease (for example, in acute leukemia and chronic leukemia).
View full size image. Thomas Edison is usually credited with the invention of the light bulb, but the famous American inventor wasn't the only one who contributed to the development of this revolutionary technology.
Typically credited as the 'inventor of the light bulb', Thomas Alva Edison experimented with thousands upon thousands of alternative filaments to find the best material for a long-lasting, high glow solution.ater, Edison invented a bulb that would not expire for over 1500 hours. Lewis Howard Latimer improved upon Edison's bulb with a new carbon filament which he patented in 1881. Latimer was part of Edison's research team, termed Edison's Pioneers, and in 1882 began to manufacture and distribute his own carbon filaments.